Finding the Fourth Proportional to 12,422.68, 18,627.60 and 3,656.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.68 : 18,627.60 = 3,656.46 : x
2. Step 2: Convert to fraction form
   12,422.68/18,627.60 = 3,656.46/x
3. Step 3: Cross multiply
   12,422.68x = 18,627.60 × 3,656.46
4. Step 4: Simplify right side
   12,422.68x = 68,111,074.30
5. Step 5: Solve for x
   x = 68,111,074.30/12,422.68
6. Step 6: Final answer
   x = 5,482.80